how to ad wires to my character
One of the way to make your mesh made of wire is using wire modifier.  If you want to fill the holes between wires your can check replace original. Like this effect:

Again if you want to make the wire look more like organic,  you can add a bunch of subsurface modifier. Like this :

Other than that,  if you want to see some interesting effect,  you can use tissue addon. Thankfully it comes with blender,  you just have to enable it.  And the effect should look like this:
Hope that helps!!